Pre-concentrating low grade high density minerals prior to further physical or analytical testing

The dedicated HLS team at ALS designs tailored programmes to meet detailed project requirements. ALS provides testwork on samples across a range of commodities including:

Iron ores

Mineral sands

Base metals

Precious metals including gold and PGMs

Uranium

Industrial minerals

Using heavy liquids including tetrabromoethane (TBE), diiodomethane and Clerici’s solution (Thallium Malonate Formate), the HLS laboratory can separate samples into a wide range of specific gravity intervals from 1.00 through to 4.05. Samples can be separated at a high single density, resulting in sink-float products, or into a range of density intervals with a minimum density increment as small as 0.1.

Separations can be conducted in the size range of 25mm to 500μm in static tests. A centrifuge is also available for fine particle separation down to 45μm.